How it works - Existing Homes:

At the push of a button, the cool water you normally let run down the drain is circulated back to the water heater through the cold water line.  The D'MAND System is easily installed under the sink farthest from your water heater.  At your D'MAND, the pump pulls the hot water from the water heater moving only the cold water back through the cold water line into the water heater to replace the hot water being moved.  When the hot water arrives at the D'MAND System it is automatically shut off by a thermo sensor at a 3-5 degree temperature change.

How it works - New Home Construction

There are two options for structured plumbing, both using the S-Series Metlund D'MAND System.  The first option is to locate the S-Series pump and the thermo sensor at the fixture furthest from the water heater.  The second is to locate the S-Series pump at the water heater and extend the thermo sensor from the electronic control board back to the fixture furthest from the water heater.  Both options can be activated by hand with buttons, remote wireless buttons or motion sensor.  Both the S-Series pump and the thermo sensor should be installed on the dedicated return line pipe.  When hot water is demanded, using any of the activation methods, the Metland D'MAND System brings hot water rapidly to the farthest fixture from the hot water heater where the sensor will pick up the temperature rise and send a signal to turn the pump off.  This concept prevents the hot water passing the thermo sensor, thus saving lost energy in the dedicated return line.

Adds convenience

It is not unusual for a homeowner to wait 2 to 5 minutes for hot water to arrive at the fixture.

Saves energy and water

The loss of water while waiting could be 3 to 7 gallons. Since most homeowners do not stand and wait for hot water to arrive, another 1 to 3 gallons may be lost before they notice hot water has arrived.

Easily installed in new or existing homes

Will work with any water heating system. Installed within two hours or less on any existing or new home. Does not require major plumbing.

Return On Investment

Will have a payback of one to three years.

Extends Water Heater Life

Reduces water heating. Allows water heater to be set at 120° and still remain effective and satisfactory to user. Also, the Metlund D'MAND System creates a self-cleaning effect on all water heaters. (Unless you have a Metlund System, the self-cleaning is available from only two manufacturers of water hearers.) When the pump is activated, cold water is supplied to the water heater at a faster GPM flow so it creates a turbulence at the bottom of the water heater and thus preventing sediments from forming. This will occur on an average of 15 times a day for a short duration of a few seconds, and thus delays rusting and leaking.

Homeowners have told us for years that they have turned down their water heater to "low" since the water that gets delivered to a fixture is now hotter than before installing the Metlund D'MAND System. Water heaters are generally set, at time of installation, to temperatures of 140° to 150°. If the water heater is turned down, each 10° reduction can save between 3% to 5% on water heating costs.